Company Filing History:
Years Active: 2011-2015
Title: Yuka Yonekura: Innovator in Piezoelectric Technology
Introduction
Yuka Yonekura is a prominent inventor based in Chino, Japan. She has made significant contributions to the field of piezoelectric technology, holding a total of 5 patents. Her work focuses on improving the performance and manufacturing processes of piezoelectric actuators and liquid jet heads.
Latest Patents
Yonekura's latest patents include a method for manufacturing piezoelectric actuators. This method involves sputter etching to enhance the adhesion between upper electrodes and lead electrodes. By utilizing an Ar gas flow at a rate of 60 sccm or more, the process minimizes the residence time of Ar ions on the surfaces of the upper electrodes. This innovation prevents charging due to ionized Ar gas buildup, thereby reducing the influence of charging on piezoelectric elements. The result is a method that produces piezoelectric actuators with minimal variations in hysteresis and deformation characteristics.
Another notable patent is for a liquid jet head and actuator apparatus. This invention features a flow passage forming substrate made from a crystal substrate, which includes a pressure generating chamber that connects to nozzle openings. The piezoelectric element, consisting of a lower electrode, a piezoelectric layer, and an upper electrode, is integrated into the substrate to modulate pressure within the chamber. The piezoelectric layer is notably thin, measuring 5 micrometers or less, and is composed of perovskite-type crystals.
Career Highlights
Yuka Yonekura is currently employed at Seiko Epson Corporation, where she continues to advance her research and development in piezoelectric technologies. Her innovative approaches have positioned her as a key figure in her field.
Collaborations
Yonekura collaborates with esteemed colleagues, including Hironobu Kazama and Koji Sumi. Their combined expertise fosters a dynamic environment for innovation and development.
Conclusion
Yuka Yonekura's contributions to piezoelectric technology exemplify her dedication to innovation and excellence. Her patents reflect a commitment to enhancing manufacturing processes and product performance. Through her work at Seiko Epson Corporation, she continues to influence the future of technology in her field.